		*{
			padding: 0;
			margin: 0;
		}
		.wrap{
			background: #dcdcdc;
		}
		.box{
			margin: 100px auto;
			width: 500px;
			height: 400px;
			background: #FFF;
			padding: 18px;
			border-radius: 5px;
			box-shadow: 2px 2px 2px #999;
			font-size: 13px;
			letter-spacing: 1px;
		}
		.txt{
			padding: 10px;
			height: 350px;
			overflow-y: auto;
			text-indent: 2em;
		}
